Hello Kevin, i downgraded the firmware to 160322 as you recommended but the problem is not solved. to ensure, i tried to make a factory reset with the same result... is there anything more to test...

hello, yes, this is the log when the connection is lost because the 4G connection is never ok! here is a new post of the log but there is nothing about errors with 4G connection......

Hello Kevin thanks for your reply. hereunder the systemlog. PS: the device was off since few days before I restart to extract the log....

Hello, i've a problem with my TL-MR6400 4g router. since a couple of days the sim card is "not found" so the connection status is "disconnected". the 4g router worked without issue since several...